Up for Debate: Metro Council elections

This week, The City Paper begins a new regular web feature called "Up for Debate," in which we ask our readers to weigh in on issues of the day by answering a question. Today's question:

On Aug. 4, Davidson County voters will choose a new Metro Council. Each of the 35 district candidates is on the ballot, and many are engaged in tight races[1]. Of this year's council candidates, who will pull off the biggest upset and why?